ML18010A956
| ML18010A956 | |
| Person / Time | |
|---|---|
| Site: | Harris  |
| Issue date: | 12/14/1992 |
| From: | Le N Office of Nuclear Reactor Regulation |
| To: | Watson R CAROLINA POWER & LIGHT CO. |
| References | |
| IEB-92-001, IEB-92-1, TAC-M83881, NUDOCS 9212210421 | |
| Download: ML18010A956 (22) | |
Text
Docket No. 50-400 Mr. R. A. Watson Senior Vice President Nuclear Generation Carolina Power It Light Company Post Office Box 1551
- Raleigh, North Carolina 27602
Dear Mr. Watson:
D'ecember 14, 1992
SUBJECT:
RESPONSE
TO NRC BULLETIN 92-01, SUPPLEMENT 1, "FAILURE OF THERMO-LAG 330 FIRE BARRIER SYSTEM" SHEARON HARRIS NUCLEAR POWER PLANT, UNIT 1
By letters dated July 27 and September 29,
- 1992, you provided responses to NRC Bulletin 92-01 and 92-01, Supplement 1, respectively, for Shearon Harris Nuclear Power Plant, Unit 1
(SHNPP).
Your letters indicated that (1)
SHNPP uses Thermo-Lag 330 material at locations described in the enclosures to the
- letters, (2) compensatory measures were implemented at SHNPP in accordance with plant procedures and Technical Specifications (TS) for affected areas containing Thermo-Lag 330 configurations which provide safe-shutdown capability, (3)
SHNNP will continue to review plant configurations against approved test data and future guidance provided through the industry program being coordinated by NUMARC, and (4)
SHNPP will maintain the above compensatory measures required until it can be determined that these fire barrier configurations can perform their specified functions in accordance with plant procedures and TS.
We have reviewed your actions and commitments and find them acceptable.
Please inform us when all corrective actions have been completed.
Further NRC review, if any, will be performed by inspection or audit.
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PDR cc:
See next page DISTRIBUTION:
Sincerely, ORIGINAL SIGNED BY:
Ngoc B. Le, Project Manager Project Directorate II-1 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation
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Docket No. 50-400 UNITEDSTATES NUCLEAR REGULATORY COMMISSION WASHINGTON, O. C. 20555 December 14, 1992 Hr.
R. A. Watson Senior Vice President Nuclear Generation Carolina Power
& Light Company Post Office Box 1551
- Raleigh, North Carolina 27602
Dear Hr. Watson:
SUBJECT:
RESPONSE
TO NRC BULLETIN 92-01, SUPPLEMENT 1, "FAILURE OF THERMO-LAG 330 FIRE BARRIER SYSTEM" SHEARON HARRIS NUCLEAR POWER PLANT, UNIT 1
By letters dated July 27 and September 29,
- 1992, you provided responses to NRC Bulletin 92-01 and 92-01, Supplement 1, respectively, for Shearon Harris Nuclear Power Plant, Unit 1
(SHNPP).
Your letters, indicated that (1)
SHNPP lette uses Thermo-Lag 330 material at locations described in the enclosures t th rs, (2) compensatory measures were implemented at SHNPP in accordance o
e with plant procedures and Technical Specifications (TS) for affected areas containing Thermo-Lag 330 configurations which provide safe-shutdown capability, (3)
SHNNP will continue to review plant configurations against approved test data and future guidance provided through the industry program being coordinated by NUMARC, and (4)
SHNPP will maintain the above compensatory measures required until it can be determined that these fire barrier configurations can perform their specified functions in accordance with plant procedures and TS.
We have reviewed your actions and commitments and find them acceptable.
Please inform us when all corrective actions have been completed.
Further NRC review, if any, will be performed by inspection or audit.
Sincerely, cc:
See next page Ngoc B. Le, Project Hanager
~
~
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Project Directorate II-1 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation
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ENCLOSURE TO SERIAL:
NLS-92-256 Page 1 of 1
SUMMARY
OF THERMO-LAG CONFIGURATIONS at Shearon Harris Nuclear Power Plant The table below provides a summary of the Thermo-Lag 330 configurations which exist at the Shearon Harris Nuclear Power Plant, The operability of the fire detectors was verified in the areas containing Thermo-Lag material providing safe-shutdown capability.
Roving hourly fire watches have been established to monitor the condition of these fire areas in accordance with the compensatory measures delineated within Plant Procedure FPP-013, Fire Protection
- Minimum Requirements and Mitigating Actions.
CONFIGURATION LOCATION REACTOR AUXILIARY BUILDING Conduit
< 1-Inch Diameter One-Hour Rated Conduit s 1-Inch Diameter Three-Hour Rated Conduit
> 1-Inch Diameter One-Hour Rated Conduit i 1-Inch Diameter Three-Hour Rated Cable Trays One-Hour Rated 236'81'8$
'g 305'lex A 8lanket Fire-Proof Panels Three-Hour Rated
~ Shaded areas Indicate Thermo-Lag appllcatlons.
(1764GI.U)
Mr. R. A. Watson Carolina Power 5 Light Company Shearon Harris Nuclear Power Plant, Unit 1
CC:
Mr. H.
Ray Starling Manager - Legal Department Carolina Power 5 Light Company P. 0.
Box 1551
- Raleigh, North Carolina 27602 Resident Inspector/Harris NPS c/o U, S. Nuclear Regulatory Commission Route 1,
Box 315B New Hill, North Carolina 27562 Mr. Gerald E.
- Vaughn, Vice President Harris Nuclear Project Harris Nuclear Plant P. 0.
Box 165 New Hill, North Carolina 27562 Mr. H. A. Cole Special Deputy Attorney General State of North Carolina P. 0.
Box 629
- Raleigh, North Carolina 27602 Public Service Commission State of South Carolina P.O.
Drawer 11649
- Columbia, South Carolina 29211 Regional Administrator, Region II U.S. Nuclear Regulatory Commission 101 Marietta Street Suite 2900 Atlanta, Georgia 30323 Mr. C.
S. Hinnant Plant General Manager Harris Nuclear Plant P. 0.
Box 165 New Hill, North Carolina 27562 Mr. Dayne H. Brown, Director Division of Radiation Protection N.
C. Department of Environmental, Commerce E Natural Resources P. 0.
Box 27687
- Raleigh, North Carolina 27611-7687 Mr. R.
B. Starkey Vice President Nuclear Services Department Carolina Power 5 Light Company P. 0.
Box 1551
- Raleigh, North Carolina 27602
Carolina Power 4 Light Company P.O. Bex 1551
~ Raleigh. N.C. 27602 e
pl ada'e<
~/y R. B. STARKLY,JR, Vice President Nuclear SeNices Department QUL 87 1S92 SERIAL:
NLS-92-204 United States Nuclear Regulatory Commission ATTENTION:
Document Control Desk Washington, DC 20555 H. B.
ROBINSON STEAM ELECTRIC PIANT, UNIT NO.
2 DOCKET NO. 50-261/LICENSE NO.
DPR-23 SHEARON HARRIS NUCLEAR POWER PLANT DOCKET NO.
50-400/LICENSE NO. NPF-63 BRUNSWICK STEAM ELECTRIC PLANT, UNIT NOS.
1 AND 2 DOCKET NOS.
50-325 AND 50-324/LICENSE NOS.
RESPONSE
TO NRC BULLETIN NO. 92-01 FAILURE OF THERMO-LAG 330 FIRE BARRIER SYSTEM TO MAINTAIN CABLING IN WIDE CABLE TRAYS AND SMALL CONDUITS FREE FROM FIRE DAMAGE Gentlemen:
The purpose of this letter is to provide Carolina Power
& Light Company's (CP&L) response to NRC Bulletin No. 92-01 for the H. B. Robinson Steam Electric Plant, Unit No.
2 (HBR2), the Shearon Harris Nuclear Power Plant (SHNPP),
and the Brunswick Steam Electric Plant, Unit Nos.
1 and 2 (BSEP).
On June 24,
- 1992, the NRC issued Bulletin No. 92-01, "Failure of Thermo-Lag 330 Fire Barrier System to Maintain Cabling in Wide Cable Trays and Small Conduits Free From Fire Damage."
The Bulletin requested that all holders of operating licenses for nuclear power reactors take the following actions:
1.
For those plants that use either one-or three-hour pre-formed Thermo-Lag 330 panels and conduit shapes, identify the areas of the plant which have Thermo-Lag 330 fire barrier material installed and determine the plant areas'which use this material for prot:ecting either small-diameter conduit or wide trays (widths greater than 14 inches) that provide safe shutdown capability.
2.
In those plant areas in which Thermo-Lag fire barriers are used to protect wide cable trays, small conduits, or both, the licensee should implement, in accordance with plant procedures, the appropriate compensatory
- measures, such as fire watches, consistent with those which would be implemented by either the plant Technical Specifications or the operating license for an inoperable fire barrier.
(1713GLU)
1
Document Control D
NLS-92-204 / Page 3.
Each licensee, within 30 days of receiving this Bulletin, is required to provide a written notification stating whether it has or does not have Thermo-Lag 330 fire barrier systems installed in its facilities.
Each licensee who has installed Thermo-Lag 330 fire barriers is required to inform the NRC, in writing, whether it has taken the above actions and is required to describe the measures being taken to ensure or restore fire barrier operability.
CP&L has utilized this material at BSEP and SHNPP.
The material has not been utilized as a fire protective material at HBR2.
A detailed review of plant drawings was performed, and some field walkdowns were performed to confirm the areas of the plant utilizing Thermo-Lag material.
A summary of the plant areas and type of Thermo-Lag configurations is shown in Enclosures 1 and 2 for BSEP and SHNPP, respectively.
Compensatory measures associated with inoperable fire barriers were implemented on June 25, 1992 at BSEP and June 26, 1992 at SHNPP in accordance with plant procedures for configurations providing safe shutdown capability.
CP&L will continue to review BSEP and SHNPP plant configurations against approved test data in order to restore fire barrier operability.
We will also review future direction provided through an industry program being coordinated by NUMARC to determine the appropriate actions necessary to restore fire barrier operability.
CP&L will maintain the compensatory measures required by plant procedures until these barriers are returned to operable status.
Should you have questions regarding this matter, please contact Mr. David C.
McCarthy at (919) 546-6901, Yours very truly, DBB/jbw Enclosures R. B. Starkey, r.
cc:
Mr. S.
D.
Mr. L. W.
Mr. N. B.
Mr. R. H.
Ms. B. L.
Mr. R. L.
Mr. J.
E.
Ebneter Garner Le Lo Mozafari Prevatte Tedrow My commission expfxes: P/y/~
R.
B. Starkey, Jres having been first duly sworn, did depose and say that the information contained herein is true and correct to the best of his information, knowledge and belief; and the sources of his information are
~uffpfg, rs,
~mpl~y~~~, contractors, and ~g~~t~ of Carolina Power & Light s
- Company,
~~. G'otary Seal)
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ENCLOSURE 1
SUMMARY
OF THERMO-LAG CONFIGURATIONS at Brunswick Steam Electric Plant A review of the plant design drawings was performed to identify areas containing Thermo-Lag 330 fire barrier material.
The table below provides a summary of this review.
The operability of the fire detectors were verified in the areas containing Thermo-Lag providing safe shutdown capability.
Roving hourly fire watches were established to monitor the condition of these fire areas in accordance with the compensatory measures delineated within Plant Program Procedure PLP-01.2, Fire Protection System Operability and Action Requirements.
CONFIGURATION LOCATION REACTOR BLDG UNIT ONE BY ELEVATION REACTOR BLDG UNITTWO BY ELEVATION DIESEL GENERATOR BLDG BY ELEV.
TURBINE BUILDING BY ELEV.'ERVICE WATER BLDG BY ELEV.
-17'0'6'0'17'0'6'0'3'0'0'ELOW 20'onduit s
1 Inch diameter One Hour Rated Conduit S
1 inch diameter Three Hour Rated rR%~'~:.'onduit
)
1 inch diameter One Hour Rated Conduit/Pipe
)
1 inch diameter Three Hour Rated Cable Trays One Hour Rated
<<OP+
FsÃ"4P C
'4~%@4 Flex A Blanket Fire Proof Panels Three Hour Rated Shaded areas indicate Thermo-Lail applications.
P
ENCLOSURE 2
SUMMARY
OF THERMO-LAG CONFIGURATIONS at Shearon Harris Nuclear Power Plant A review of the plant design drawings, periodic test procedure for fire wrap and a field walkdown was performed to identify areas containing Thermo-Lag 330 fire barrier material.
The table below provides a summary of this review.
The operability of the fire detectors were verified in the areas containing Thermo-Lag providing safe shutdown capability.
Roving hourly fire watches were established to monitor the condition of these fire areas in accordance with the compensatory measures delineated within Plant Procedure FPP-013, Fire Protection Minimum Requirements and Mitigating Actions.
CONFIGURATION LOCATION REACTOR AUXILIARY BUILDING 236'61'86'05'onduit s
1 Inch diameter One Hour Rated Conduit S
1 inch diameter Three Hour Rated Conduit
)
1 inch diameter One Hour Rated Conduit
) 1 Inch diameter Three Hour Rated ta.
<c aw~
Cable Trays One Hour Rated Flex A Blanket Fire Proof Psneie Three Hour Rated
~ Shaded areas indicate Thermo+ay applicatione.
R. B. STARKEY.JR.
Vice President Nuclear Seniices Department Carolina Power & Light Company P.O. Box t55t ~ Raleigh, N.C. 27602
[SEP 39 1992 SERIAL:
NLS-92-256 United States Nuclear Regulatory Commission ATTENTION:
Document Control Desk Washington, DC 20555 H, B.
ROBINSON STEAM ELECTRIC PLANT, UNIT NO.
2 DOCKET NO. 50-261/LICENSE NO.
DPR-23 SHEARON HARRIS NUCLEAR POWER PLANT DOCKET NO.
50-400/LICENSE NO. NPF-63 BRUNSWICK STEAM ELECTRIC PLANT, UNIT NOS.
1 AND 2 DOCKET NOS, 50-325 AND 50-324/LICENSE NOS.
RESPONSE
TO NRC BULLETIN NO. 92-01, Supplement 1
FAILURE OF THERMO-LAG 330 FIRE BARRIER SYSTEM TO PERFORM ITS SPECIFIED FIRE ENDURANCE FUNCTION Gentlemen:
The purpose of this letter is to provide Carolina Power & Light Company's (CP&L) response to NRC Bulletin No. 92-01, Supplement 1 for the H. B. Robinson Steam Electric Plant, Unit No.
2 (HBR2), the Shearon Harris Nuclear Power Plant (SHNPP),
and the Brunswick Steam Electric Plant, Unit Nos.
1 and 2
(BSEP).
On August 28,
- 1992, the NRC issued Bulletin No. 92-01; Supplement 1, "Failure of Thermo-Lag 330 Fire Barrier System to Perform Its Specified Fire Endurance Function."
The Bulletin requested that all holders of operating licenses for nuclear power reactors take the following actions:
For those plants that use either one-or three-hour pre-formed Thermo-Lag 330 panels and conduit shapes, identify the areas of the plant which have Thermo-Lag 330 fire barrier material installed and determine the plant areas which use this material for the protection and separation of the safe-shutdown capability.
2.
In-those plant areas in which Thermo-Lag fire barriers are used in raceways, walls, ceilings, equipment enclosures, or other areas to protect cable trays, conduits, or separate redundant safe-shutdown functions, the licensee should implement, in accordance with plant procedures, the appropriate compensatory
- measures, such as fire watches, consistent with those that would be implemented by either the plant Technical Specifications or the operating license for an inoperable fire barrier.
These compensatory measures should remain in place until the licensee can declare the fire barriers operable on the basis of applicable tests which demonstrate successful one-or three-hour barrier performance.
(1764tiLU)
Document Control De NLS-92-256 / Page 2
Each licensee who has installed Thermo-Lag 330 fire barriers must inform the NRC in writing within 30 days of receiving this Bulletin Supplement, whether or not it has taken the above actions.
Where fire barriers are declared inoperable, the licensee is required to describe the measures being taken to ensure or restore fire barrier operability.
These measures should be consistent with actions taken in response to Bulletin No. 92-01.
CP&L Res onse Carolina Power
& Light Company has utilized this material at BSEP and SHNPP.
The material has not been utilized as a fire protective material at HBR2.
A summary of the plant areas and type of Thermo-Lag configurations provided in our initial response has been updated and is shown in Enclosures 1 and 2 for BSEP and SHNPP, respectively.
Carolina Power
& Light Company had conservatively judged any Thermo-Lag installation to be suspect based upon the original NRC notification.
Compensatory measures were implemented in accordance with plant procedures and Technical Specifications for affected areas containing Thermo-Lag 330 configurations which provide safe-shutdown capability.
Carolina Power
& Light Company will continue to review plant configurations against approved test data.
Future guidance provided through the industry program being coordinated by NUMARC will be reviewed to determine the appropriate actions required to resolve this issue.
Carolina Power & Light Company will maintain the above compensatory measures until these configurations can be determined to be reliable in accordance with plant procedures and Technical Specifications.
These measures are consistent with those outlined in CP&L's response to Bulletin No. 92-01 dated July 27, 1992.
Should you have questions regarding this matter, please contact Mr. David C.
McCarthy at (919) 546-6901.
Yours very truly, DBB/jbw Enclosures R. B. Starkey, J
cc:
Mr. S.
D.
Mr. L. W.
Mr. N. B.
Mr. R.
H.
Ms.
B. L.
Mr. R. L.
Mr. J, E.
Ebneter Garner Le Lo Mozafari Prevatte Tedrow My cosseission expires: mg/6/Q N11l!1I)t))))
R.
B. Rtarkey, dr., having been first duly sworn, did depose and say t gh)e. Cp~oei information contained herein is true and correct to the best of his information, knowledge and belief; and the sources of his informatiorggga yA)y officers, employees, contractors, and agents of Carolina Power
& Lig~
Company.
o C
Notary (Se
)
~~
. ~080<
"";~Coopt"':"
)))))ggggg (17640 LU)
ENCLOSURE L TO SERIAL:
NLS-92-256 Page 1 of 1
SUMMARY
OF THERMO-LAG CONFIGURATIONS at Brunswick Steam Electric Plant The table below provides a summary of the various Thermo-Lag configurations which exist at the Brunswick Steam Electric Plant.
The operability of the fire detectors was verified in the areas containing Thermo-Lag 330 material providing safe-shutdown capability.
Roving hourly fire watches have been established to monitor the condition of these fire areas in accordance with the compensatory measures delineated within Plant Procedure PLP-01.2, Fire Protection System Operability and Action Requirements, and Technical Specification 3.7.8, Fire Barrier Penetrations.
CONFIGURATION LOCATION REACTOR BLDG.
UNITONE BY ELEVATION REACTOR BLDG.
UNITTWO BY ELEVATION DIESEL GEN.
BLDG. BY ELEV.
TURBINE BLDG.
BY ELEV.
CONTROL BLDG.
BY ELEV.
SW BLDG.
BY ELEV.
-17'0'6'0'6'3'ELOW 20'onduit s 1-Inch Diameter One-Hour Rated Conduit S 1-Inch DIameter Throe-Hour Rated Conduit i 1-Inch Diameter One-Hour Rated Condultplpe
> 1-Inch Diameter Three-Hour Rated Cable Trays One-Hour Rated Flex A Blanket Fire Barrfer Seals Fire-Proof Panels Three-Hour Rated
'%i5 jgxj~
'9 C
'haded areas Indicate Thermo-Lap appllcatlons.
(1764GLU)
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